• Proceedings of the Korean Society of Laser Processing Conference
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• 2006.06a
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• pp.135-143
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• 2006

• Journal of Broadcast Engineering
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• v.19 no.3
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• pp.362-371
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• 2014

Blur variation caused by camera de-focusing provides a proper cue for depth estimation. Depth from Defocus (DFD) technique calculates the blur amount present in an image considering that blur amount is directly related to scene depth. Conventional DFD methods use two defocused images that might yield the low quality of an estimated depth map as well as a reconstructed infocused image. To solve this, a new DFD methodology based on infocused and defocused images is proposed in this paper. In the proposed method, the outcome of Subbaro's DFD is combined with a novel edge blur estimation method so that improved blur estimation can be achieved. In addition, a saliency map mitigates the ill-posed problem of blur estimation in the region with low intensity variation. For validating the feasibility of the proposed method, twenty image sets of infocused and defocused images with 2K FHD resolution were acquired from a camera with a focus control in the experiments. 3D stereoscopic image generated by an estimated depth map and an input infocused image could deliver the satisfactory 3D perception in terms of spatial depth perception of scene objects.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.163-166
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• 2020

호텔기업은 최고의 서비스를 주고받는 산업으로 다른 기업과의 비교우위를 위하여 우수한 인력개발을 통해 조직의 효율성을 확보하는 전략에 초점을 맞추어 왔다. 따라서 본 연구는 호텔종사원을 연구대상으로 선정하여 첫째, 관계갈등이 조직시민행동에 영향을 미칠 것이다, 둘째, 과업갈등이 조직시민 행동에 영향을 미칠 것이다. 셋째, 관계갈등과 조직시민행동과의 관계, 과업갈등과 조직시민행동과의 관계에서 셀프리더십의 조절을 살펴보았다. 자료 수집을 위한 설문조사는 서울 경기도 지역의 특급호텔 종사원을 대상으로 400명에게 설문을 실시하였다. 분석결과를 예측해보면 첫째, 관계갈등은 조직시민행동에 유의미한 관계를 미칠 것으로, 둘째 과업갈등은 조직시민행동에 유의미한 관계를 미칠 것으로, 셋째, 셀프리더십은 관계갈등과 조직시민행동간의 관계에서 조절변수의 역할을 넷째, 셀프리더십은 과업갈등과 조직시민행동에 조절효과를 미칠 것으로 판단되어 진다. 조직시민행동의 예측변인으로서 관계갈등과 과업갈등에 대하여 탐색적인 수준에서 연구가 이루어졌음에도 관계갈등과 조직시민행동 그리고 셀프리더십의 상호작용을 다룬 연구가 이루어진 것에 의미가 있다. 또한 관계갈등과 조직시민행동의 관계를 조절하고 과업갈등과 조직시민행동과의 관계를 조절할 것으로 예측되어지는데 이는 후속연구의 바탕이 될 수 있을 것이다. 이런 연구결과를 바탕으로 조직의 관리자는 관계갈등과 과업갈등을 최소화 하고 조직시민행동을 높일 수 있는 방안에 대한 다양한 자기개발 및 프로그램을 개발하고 종사원에게 제공하여 건실한 조직문화를 이루어야 하겠다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.1
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• pp.209-226
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• 2016

Recently, there is a growing interest in Fintech which is a business based on using IT to provide financial services. At the early stage of diffusion of Fintech, one of the issues raised is the concern for information security. This study examines actual users' information privacy concern and user resistance to Fintech services. We also investigates the effects of social influence and mobile Internet literacy on information privacy concern and user resistance. In particular, this research verifies the interaction effect between regulatory focus and information privacy concern to influence user resistance. Based on the findings, the results of this study provide strategic implications for firms which attempt to reduce user resistance to Fintech services and proliferate Fintech usage.

• Fashion & Textile Research Journal
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• v.16 no.4
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• pp.580-587
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• 2014

This study demonstrates how the composition of VM based on regulatory focus influences shopping value and how shopping value influences shopping satisfaction. A survey form was developed and 90 copies were used for analysis. SPSS 19.0 for Windows Package was used to perform frequency analysis, factor analysis, and regression analysis. The results of the study were: First, convenience of VM had a significantly positive (+) influence on utilitarian shopping value. Second, both utilitarian shopping value and hedonic shopping value had a statistically significant influence on shopping satisfaction. Third, in terms of promotion focus, suitability, fashionableness, reconcilability, and attractiveness of VM had a significantly positive (+) influence on the hedonic shopping value. In terms of preventive focus, convenience and reconcilability of VM had a significantly positive (+) influence on utilitarian shopping value, and convenience, suitability, and fashionableness had a significantly positive (+) influence on hedonic shopping value. In the promotion focus, both utilitarian shopping value and the hedonic shopping value had a significantly positive (+) influence on shopping satisfaction. In the preventive focus only the utilitarian shopping value had a significantly positive (+) influence on shopping satisfaction.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.665-666
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• 2006

In precision laser microfabrication, focusing is essential to acquire good machining precision and uniform machining quality. If it does not perform, laser machining cannot be realized. So, confocal scanning method with high depth resolution is used for focus detection technique. This paper is concerned with a procedure for design, analysis and performance test of an autofocus fine actuating stage, which is composed of flexure-hinge type lever mechanism and piezoelectric actuator. Through series of analytical design, the stage is simplified as a rigid bodies(lever and main body) and springs(flexure hinges). The simplified model was applied to determine the dimension of flexure hinges and lever. After structural analysis confirmed design requirement, an actual stage was made and verified through an experiment on the static and dynamic characteristics(maximum stroke and 1st natural frequency). The fabricated stage was satisfied with the design requirement.

• Journal of Digital Convergence
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• v.14 no.3
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• pp.445-452
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• 2016

The purposes of this study were to examine the two processes of social comparison and self-comparison, and to suggest the applications of social comparison theories and self-comparison theories. For these purposes, social comparison theory, self-evaluation maintenance model, control theory, self-discrepancy theory, regulatory focus theory, and temporal comparison theory were reviewed. The processes of social comparison and self-comparison are different, but both comparisons are similar in that they have some effects on self-evaluation, emotion, motivation and behaviors. Suggestions on education, health, economic justice and interpersonal relationships were discussed.

• Fashion & Textile Research Journal
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• v.24 no.6
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• pp.707-718
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• 2022

The metaverse is emerging as the next digital environment for people not only to interact and collaborate with others, but also to have virtual consumption experiences. In this study, virtual fashion items for the consumer's digital self are deemed significant products with consumption value. Drawing from the regulatory focus theory, this study examines how consumers' promotion and prevention focus influence value perception and buying behaviors of virtual fashion items in the metaverse context. The data were collected through an online survey. A total of 546 consumers in their twenties who are aware of the metaverse responded to a self-administered questionnaire. The results showed that promotion focus influenced all the perceived consumption values of virtual fashion items such as the economic, visual authority, hedonic, and social value, whereas prevention focus influenced only the visual authority value. Visual authority value negatively affected both purchase intention and willingness to pay premium price, while others had a positive effect. The findings provide theoretical evidence that consumers' regulatory focus is critical in buying virtual fashion items and suggest that marketers devise effective strategies to stimulate consumers' regulatory focus and to emphasize the economic, hedonic, and social value of the items in the metaverse context.

• Journal of Digital Convergence
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• v.13 no.12
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• pp.433-440
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• 2015

This study was conducted to examine mediative effects of two factors, emotion control and thinking control, in the relationship between avoid fusion and attention. Participants (308 high school students) were asked to complete a questionnaire which contains items to measure some psychological properties such as emotion control (EC), thinking control (TC), avoidance avoid fusion (CF), conceration(Co) and learning attitude(LA). Structural equation model analysis showed that 8 of modified 9 paths were statistically significant; CF to Co and TC, TC to EC, Co, and LA, EC to Co and LA, and Co to LA. Limitations and suggestions were mentioned in the discussion.

• Journal of the Korean Magnetics Society
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• v.25 no.2
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• pp.52-57
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• 2015

The focal spot of electron beam depending on the anode angle in the structure and major parts of the X-ray tube was investigated by the OPERA-3D/SCALAR simulation program. The simulation worked on four spaces with with two spaces, including anode and cathode of X-ray tube, by applying the finite element method analysis. The analytical model and dimension for the emission orbit of thermal electrons made from one filament of the focused X-ray cathode is affected to the penumbra of detector for the X-ray depending on any real focal spot size. The model shape of focusing cap and focusing tube with an anode target angle and a cathode filament is analyzed by the current density distribution of thermal electrons. The focusing width of thermal electrons for the X-ray tube depended on the anode angle (${\theta}$). The focusing value of electron beams at a region of anode angle having $10^{\circ}{\sim}17^{\circ}$ maintained to below value of $70{\mu}m$. The minimum focal size of the electron beam was $40{\mu}m$ at an anode angle of $15^{\circ}$. The focused X-ray tube of many variables depended on the thermionic emission of hot electrons from the target trajectory. The focusing tube will contribute to the real design of X-ray for the development of future diagnosis medical device.